The Dual Boundary Element Method For
Growing Cracks Allowing For Crack Curvature
Near The Tip

Price

Free (open access)

Paper DOI

10.2495/BE940451

Pages

10

Published

1994

Size

914 kb

Author(s)

W.S. Blackburn & W.S. Hall

Abstract

Portela and Aliabadi have recently made available a book and software
for the application of crack growth in linear elastic materials in two
dimensions. The stress intensity factors are evaluated by contour
integrals around the tip. This has been generalised to allow for
quartic shape functions, curved cracks and growth of cracks by
different amount at different crack tips. Examples will be given of
initially straight cracks under uniform and mixed mode loading.
1 Introduction
Portela, Aliabadi and Rooke* have presented a method for analysing
cracks in a two dimensional linear elastic material by using
discontinuous quadratic boundary elements. On one face of the crack,
they formulated the equations for the displacements, and on the other
face those for the tractions.